Skip to content

Event ID 508: The system has been constrained to a periodic tick

Windows Event ID Lookup: What Windows event IDs mean: 4625, 4624, 4740, 6008, 41, 7045, 1102 and 3,000 more, with Windows' own message text, the fields and what to check.

Look up a Windows event ID from Event Viewer, a SIEM alert or a log export: what it means, the fields it records, and what to check. Many IDs are used by more than one source (event 41 is both a Kernel-Power crash and a boot error), so every definition is shown, the one people usually mean first. The message text is Windows' own, read from the event providers of Windows 10.0.26200.0, 2026-10-28; the notes are ours, based on Microsoft's security auditing reference.

Try: 4625, 4624, 4740, 6008, 41, 1074, 7045, 1102, 4104, 1149

The system has been constrained to a periodic tick

Event 508
Kernel-Power
System log
Information
Message and fields (as Event Viewer shows them) 
The system has been constrained to a periodic tick 

Reason: ….

Miniport bug detected for … : A pending request was not completed by miniport for below storage device even after successful abort operation.

Event 508
StorPort
System log
Error
Message and fields (as Event Viewer shows them) 
Miniport bug detected for … : A pending request was not completed by miniport for below storage device even after successful abort operation.                    
Storport Device (Port = …, Path = …, Target = …, Lun = …).                    
Corresponding Class Disk Device Guid is ….

Explicit execution of all idle tasks is in progress.

Event 508
TaskScheduler
TaskScheduler/Operational log
Information
Message and fields (as Event Viewer shows them) 
Explicit execution of all idle tasks is in progress.